CN104725681A - Composition as well as metro composition brake shoe and preparation method thereof - Google Patents
Composition as well as metro composition brake shoe and preparation method thereof Download PDFInfo
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- CN104725681A CN104725681A CN201510121382.8A CN201510121382A CN104725681A CN 104725681 A CN104725681 A CN 104725681A CN 201510121382 A CN201510121382 A CN 201510121382A CN 104725681 A CN104725681 A CN 104725681A
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- 239000000203 mixture Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 17
- 239000010439 graphite Substances 0.000 claims abstract description 17
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000005864 Sulphur Substances 0.000 claims abstract description 13
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 13
- 239000010455 vermiculite Substances 0.000 claims abstract description 13
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 13
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 11
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 11
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000008117 stearic acid Substances 0.000 claims abstract description 11
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims description 56
- 229920003987 resole Polymers 0.000 claims description 23
- 229920001971 elastomer Polymers 0.000 claims description 20
- 239000005060 rubber Substances 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 18
- 229920013649 Paracril Polymers 0.000 claims description 17
- 229920003193 cis-1,4-polybutadiene polymer Polymers 0.000 claims description 16
- 239000004927 clay Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000003801 milling Methods 0.000 claims description 4
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052570 clay Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract 2
- 239000005062 Polybutadiene Substances 0.000 abstract 2
- 229920001568 phenolic resin Polymers 0.000 abstract 2
- 239000005011 phenolic resin Substances 0.000 abstract 2
- 229920002857 polybutadiene Polymers 0.000 abstract 2
- 229910001570 bauxite Inorganic materials 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 17
- 239000000835 fiber Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000003082 abrasive agent Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010433 feldspar Substances 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003685 thermal hair damage Effects 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical group C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000010094 polymer processing Methods 0.000 description 1
- -1 polymethylene Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/016—Additives defined by their aspect ratio
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a composition, as well as a metro composition brake shoe and a preparation method thereof. The composition is composed of the following components in parts by weight: 3-7 parts of nitrile rubber, 10-14 parts of butadiene rubber, 2-8 parts of phenolic resin, 25-29 parts of graphite, 21-25 parts of basalt fiber, 20-26 parts of bauxite, 1-5 parts of vermiculite, 0.4-0.9 part of zinc oxide, 0.1-0.6 part of stearic acid, 0.3-0.7 part of sulphur and 0.3-0.7 part of accelerant, wherein the total weight of the nitrile rubber, the butadiene rubber and the phenolic resin is not less than 19 parts. The composition brake shoe provided by the invention overcomes the shortcomings of the prior art and has the excellent performances of high finished product ratio, low energy consumption and low noise in the brake area.
Description
Technical field
The invention belongs to traffic and transport field, be specifically related to a kind of composition, and contain subway composite brake shoe of said composition and preparation method thereof.
Background technology
In recent years along with urban rail transit in China fast development, railcar recoverable amount increases sharply.Ended for the end of the year 2014, national railcar breaks through 14000.More a line, even tier 2 cities will join the ranks opening subway city.Composite brake shoe is as the vitals of breaking system, and every Year's consumption is more than 300,000 pieces.Because subway is at the space motion of relative closure, railcar composite brake shoe is examined except coefficient stabilization except requiring to rub, and also requires that brake noise is little.Current domestic composite brake shoe manufacturing enterprise more than 30, Market competition.Producing physicochemical property and the more superior composite brake shoe of economic performance, is one of key obtaining the market advantage.
Publication No. is CN102643511B, name is called that the Chinese invention patent of " a kind of composite brake shoe and preparation method thereof " discloses a kind of composite brake shoe composition and preparation method.With parts by weight, this composite brake shoe composition comprises following raw material: resol 3-5 part, paracril 1.5-3.5 part, graphite 1.5-3.5 part, reduced iron powder 3.5-5.5 part, steel fiber 4.5-6.5 part, wollastonite 1.5-3.5 part, sepiolite 2.5-4.5 part, potassium felspar sand 3.5-5.5 part, aluminum oxide 0.05-0.20 part, sulphur 0.15-0.40 part and promotor 0.05-0.20 part.Brake block prepared by said composition has the advantage of great friction coefficient of long service life, low abrasion mating plate, does not produce harmful damascene, do not produce thermal damage to wheel during use.But when said composition is mixing, material filling flow is poor, yield rate is low, and power consumption of polymer processing is large, causes cost high.
Braking Composition brake shoes that the Chinese invention patent that publication No. CN101805469B, name are called " high-abrasive material, braking Composition brake shoes and preparation method thereof " discloses a kind of high-abrasive material, prepare with this high-abrasive material and preparation method thereof.Described high-abrasive material comprises the components such as paracril, resol, graphite, iron powder, process white, feldspar in powder, steel fiber, acicular wollastonite and other auxiliary materials.The Composition brake shoes be made up of this material can meet the service requirements of Increasing Speed Passenger Car, and by using display in system-wide entrucking, braking effect, well, to retarding disc without thermal damage and abnormal wear, self can not fall slag, fall block, long service life simultaneously.But the noise when car brakeing of brake shoe disclosed in this patent is large.
Publication No. is CN100497470C, name is called the Chinese invention patent of " Novel high friction coefficient synthetic brake shoe and manufacturing process thereof ", each weight percentages of components of disclosed composite brake shoe is as follows: nitrile rubber is 6.20%, resol is 10.00%, graphite is 15.00%, iron powder is 11.03%, barium sulfate is 30.00%, feldspar in powder is 5.00%, conjugated fibre is 20.20%, and sulphur is 1.00%, and hexamethylenetetramine is 1.00%, polymethylene polyphenylamine 0.12%, 2-benzothiazolyl mercaptan 0.15%, zinc oxide 0.30%, toluene 8.0%.Must use toluene in this composite brake shoe course of processing, this can damage the health of workman, is also unfavorable for environmental protection.
Therefore, all there is various shortcoming not fully up to expectations in composite brake shoe disclosed in prior art, and as brake noise is large, yield rate is lower, and tooling cost is more high.
Summary of the invention
For the problems referred to above, one object of the present invention is to provide a kind of composition.The railcar composite brake shoe prepared by said composition, has the advantage that brake noise is little; And yield rate is high in preparation process, energy consumption is low, significantly can cut down finished cost, improve enterprise's competitive power in the market.
In order to realize foregoing invention object, present invention employs following technical scheme:
A kind of composition, with parts by weight, is made up of following component: paracril 3-7 part, cis-1,4-polybutadiene rubber 10-14 part, resol 2-8 part, graphite 25-29 part, basalt fibre 21-25 part, bauxitic clay 20-26 part, vermiculite 1-5 part, zinc oxide 0.4-0.9 part, stearic acid 0.1-0.6 part, sulphur 0.3-0.7 part, promotor 0.3-0.7 part; And the total weight parts of paracril, cis-1,4-polybutadiene rubber and resol is no less than 19 weight parts.
Preferably, with parts by weight, the formation of described composition is: paracril 4-6 part, cis-1,4-polybutadiene rubber 11-13 part, resol 3-7 part, graphite 26-28 part, basalt fibre 22-24 part, bauxitic clay 22-24 part, vermiculite 2-4 part, zinc oxide 0.6-0.8 part, stearic acid 0.2-0.4 part, sulphur 0.4-0.6 part, promotor 0.4-0.6 part; And the total weight parts of paracril, cis-1,4-polybutadiene rubber and resol is no less than 19 weight parts.
More preferably, with parts by weight, the formation of described composition is: paracril 5 parts, cis-1,4-polybutadiene rubber 12 parts, 5 parts, resol, 27 parts, graphite, basalt fibre 23 parts, bauxitic clay 23 parts, vermiculite 3 parts, 0.7 part, zinc oxide, stearic acid 0.2 part, 0.6 part, sulphur, promotor 0.4 part.
Preferably, the median size < 50 μm of described graphite, vermiculite and bauxitic clay.
Preferably, described basaltic staple length is 2-3 millimeter, and length-to-diameter ratio is 15-20:1.
Preferably, in described paracril, acrylonitrile content is 33 ± 2%.
Preferably, described resol is the resol of model 2123.
Preferably, described promotor is accelerant CZ.
Another object of the present invention is to provide above-mentioned composition preparing the application in railcar braking composite brake shoe.
A further object of the invention, is the preparation method of the composite brake shoe providing a kind of railcar to brake.Described preparation method is raw material with above-mentioned composition, comprises the steps:
I. each raw material is prepared according to proportioning;
II. first the butadiene-acrylonitrile rubber of described weight part and cis-1,4-polybutadiene rubber are placed in milling machine, normal temperature is plasticated 2 ± 0.5 minutes;
III. resol, graphite, basalt fibre, bauxitic clay, vermiculite, zinc oxide, the stearic acid of described weight part is added again, mixing 8 ± 1 minutes of normal temperature;
IV. finally add sulphur and the promotor of described weight part, mixing 2 ± 0.5 minutes of normal temperature, discharging is stand-by;
V. the product that step IV obtains is put into the mould being preheated to 145 ± 3 DEG C, keep this temperature to carry out one step cure, 40 ± 2 minutes time;
VI. the product obtained by step V carries out post cure in warm air curing oven, and condition is 160 ± 3 DEG C, 120 ± 5 minutes, naturally cools to 50 DEG C with bottom discharge, obtains described composite brake shoe.
The present invention also provides the composite brake shoe prepared by aforesaid method.
In addition, the present invention also provides described composite brake shoe for the purposes of railcar breaking system.
In composition of the present invention, paracril, cis-1,4-polybutadiene rubber and resol are jointly as tackiness agent, and basalt fibre is as fortifying fibre, and zinc oxide, stearic acid, sulphur, accelerant CZ are as vulcanization system; Graphite, vermiculite, bauxitic clay are as filler.
Composition of the present invention is with paracril, cis-1,4-polybutadiene rubber and resol and be used as tackiness agent, does strongthener with basalt fibre, under the specified weight proportioning of each component, prepares the composite brake shoe that applicable railcar uses.For the composite brake shoe of the present invention of embodiment 1-5, brake noise all below 80 decibels (wherein, only 70 decibels, the brake shoe of embodiment 5), yield rate more than 92%, average consumption 3.58 degree (minimum only power consumption 3.2 degree).The composite brake shoe of comparative example 1-4, raw material or tackiness agent form different from embodiment 1-5 or adopt metallic substance as fortifying fibre, its brake noise mostly more than 100 decibels (comparative example 2 is even up to 110 decibels), yield rate less than 85%.Compare with comparative example 1,2, yield rate of the present invention improves more than 10%, and economize on electricity amplitude is maximum reaches 36%.
In addition, composition of the present invention not metalliferous feed material, easily produces the problem of damascene when solving composite brake shoe of the prior art braking.In addition, although not containing the raw metal such as iron powder, steel fiber, the composite brake shoe stable friction factor that the present invention prepares, in braking procedure fluctuation be no more than ± 10%.Meanwhile, the basalt fibre as strongthener is mineral fibre, and price is cheap compared with steel fiber etc.; And the density of basalt fibre own is little, obtained brake shoe volume cost is relatively little, and in conjunction with the raising of yield rate, compare with comparative example 3,4, the composite brake shoe production cost of embodiment 1-5 can reduce about 20%.
In a word, the present invention is using the composition of specific composition as the raw material of composite brake shoe, and especially specific tackiness agent and strongthener, when solving the Block brake of prior art well, noise is large, yield rate is low, energy consumption is large, the problem of easily generation damascene.
In the preparation process of brake block of the present invention, do not use any organic solvent, little on the impact of environment and operator.
In a word, the present invention, preferably to form and weight proportion provides a kind of composition, becomes the desirable feedstock of railcar braking composite brake shoe; Solve in prior art that brake block noise is large, yield rate is low, defect not environmentally.Braking composite brake shoe prepared by composition of the present invention, can reach that stopping distance is no more than 350m, braking time is no more than 30 seconds, the brake noise excellent properties that is less than 80 decibels.
Embodiment
Referring to specific embodiment, the present invention is described.It will be appreciated by those skilled in the art that these embodiments are only for illustration of the present invention, its scope do not limited the present invention in any way.
Experimental technique in following embodiment, if no special instructions, is ordinary method.Medicinal raw material used in following embodiment, reagent material etc., if no special instructions, be commercially available purchase product, wherein:
Paracril, the trade mark 3345, Zhenjiang Nan Di Chemical Co., Ltd. produces.
Resol, model 2123, Jinan holy well sea Butterworth Chemical Co., Ltd. produces.
Cis-1,4-polybutadiene rubber, trade mark BR9000, Beijing yanshan petrochemical company limited produces.
Basalt fibre, Dongguan City E Jin basalt fibre company limited produces.
Graphite, Liaoyang distance of travel of roc Tan Su technological development company limited produces.
Bauxitic clay, firewood prosperous refractory factory in Xinhua Lu, Xinmi City is produced.
Promotor, model is accelerant CZ, and trade name is N cyclohexyl 2 benzothiazole sulfenamide, purchased from Beijing Yan Jun chemical industry sales company.
The composite brake shoe of following examples, prepares by the following method, mixing X (S) the N35*30 type milling machine all adopting Dalian Jia Erxin rubber and plastics machine company limited to produce of its Raw:
I. each raw material is prepared according to proportioning;
II. first the butadiene-acrylonitrile rubber of described weight part and cis-1,4-polybutadiene rubber are placed in milling machine, normal temperature is plasticated 2 ± 0.5 minutes;
III. resol, graphite, basalt fibre, bauxitic clay, vermiculite, zinc oxide, the stearic acid of described weight part is added again, mixing 8 ± 1 minutes of normal temperature;
IV. finally add sulphur and the promotor of described weight part, mixing 2 ± 0.5 minutes of normal temperature, discharging is stand-by;
V. the product that step IV obtains is put into the mould being preheated to 145 ± 3 DEG C, keep this temperature to carry out one step cure, 40 ± 2 minutes time;
VI. the product obtained by step V carries out post cure in warm air curing oven, and condition is 160 ± 3 DEG C, 120 ± 5 minutes, naturally cools to 50 DEG C with bottom discharge, obtains described composite brake shoe.
embodiment 1-5the composite brake shoe of a kind of composition and preparation thereof
Described in each embodiment, the composition of composition, is shown in Table 1.Composite brake shoe is prepared by aforesaid method.
comparative example 1-4a kind of composite brake shoe
The raw material of the composite brake shoe of each comparative example, be shown in Table 1, by the method close with embodiment 1-5, (described " close " refers to that step is identical with embodiment 1-5 with the processing parameter often walked, but because the composition of raw material is different, the material variety that concrete mixing each step adds and quality variant), prepare target product.
Wherein, tackiness agent composition in the raw material of comparative example 1 and 2, and the composition of fortifying fibre in the raw material of comparative example 3 and 4, have larger difference with embodiment 1-5.
test examplethe composite brake shoe performance of each embodiment and comparative example and relevant parameters measure
According to TB/T3196 " locomotive composite brake shoe ", carry out 1:1 brake test, measure the performance perameter of composite brake shoe prepared by embodiment 1-5 and comparative example 1-4.
In addition, with a mixing car (100kg) for unit, the production efficiency indexs such as the energy consumption of each embodiment and comparative example, yield rate are investigated.
Result: the brake noise of each composite brake shoe, stopping distance, the performance perameter such as braking time and proportion, and index such as a mixing car (100kg) current consumption and yield rate etc., in table 1.
1. the composite brake shoe of embodiment 1-5 and comparative example 1-4, braking time and stopping distance all meet the requirement of TB/T3196 " locomotive composite brake shoe "; But the braking time of the composite brake shoe of embodiment 1-5 is shorter, stopping distance is shorter, illustrate that composite brake shoe braking ability of the present invention is more excellent.
2. the composite brake shoe of embodiment 1-5, yield rate is 92%-97%; The yield rate that raw material composition is different from the comparative example 1-4 of embodiment is only 79%-84%.Illustrate that composition of the present invention can significantly improve the yield rate preparing composite brake shoe.
3. the composite brake shoe brake noise of embodiment 1-5 is all lower than 80 decibels (70-78 decibels), and the brake noise of comparative example 1-4, up to 85-110 decibel, illustrates that composition of the present invention significantly can reduce the brake noise of brake shoe.
4. a mixing car raw material (100kg), the energy consumption of embodiment 1-5 is significantly lower than comparative example 1 and 2, and the former power consumption 3.2-3.8 degree, latter needs 5.0 and 4.5 degree.
5. the proportion of the composite brake shoe of embodiment 1-5 is also a little less than comparative example 1-4.
Conclusion:
Various embodiments of the present invention are identical with the preparation technology of comparative example, and therefore the difference of the said products performance is caused by the composition of raw materials of composite brake shoe.The present invention, with composition of preferably filling a prescription, has not only prepared and has met railcar composite brake shoe, and solves the problems such as the brake noise that in prior art, composite brake shoe exists is large, yield rate is low well.In addition, due to yield rate raising and have employed the raw material of cheaper, the production cost of composite brake shoe of the present invention is also remarkable in prior art (about low by 20%), thus makes enterprise occupy advantage in the market competition of fierceness.
Table 1
In a word, the invention provides a kind of composition with specific composition, and take said composition as subway composite brake shoe of raw material and preparation method thereof.Described composite brake shoe overcomes the deficiencies in the prior art, has the excellent properties that the rate of manufacturing a finished product is high, energy consumption is low, brake noise is low.
Specific description of embodiments of the present invention does not above limit the present invention, and those skilled in the art can make various change or distortion according to the present invention, only otherwise depart from spirit of the present invention, all should belong to the scope of claims of the present invention.
Claims (10)
1. a composition, with parts by weight, is made up of following component: paracril 3-7 part, cis-1,4-polybutadiene rubber 10-14 part, resol 2-8 part, graphite 25-29 part, basalt fibre 21-25 part, bauxitic clay 20-26 part, vermiculite 1-5 part, zinc oxide 0.4-0.9 part, stearic acid 0.1-0.6 part, sulphur 0.3-0.7 part, promotor 0.3-0.7 part; And the total weight parts of paracril, cis-1,4-polybutadiene rubber and resol is no less than 19 weight parts.
2. composition according to claim 1, is characterized in that, with parts by weight, the formation of described composition is: paracril 4-6 part, cis-1,4-polybutadiene rubber 11-13 part, resol 3-7 part, graphite 26-28 part, basalt fibre 22-24 part, bauxitic clay 22-24 part, vermiculite 2-4 part, zinc oxide 0.6-0.8 part, stearic acid 0.2-0.4 part, sulphur 0.4-0.6 part, promotor 0.4-0.6 part; And the total weight parts of paracril, cis-1,4-polybutadiene rubber and resol is no less than 19 weight parts.
3. composition according to claim 1, is characterized in that, with parts by weight, the formation of described composition is: paracril 5 parts, cis-1,4-polybutadiene rubber 12 parts, 5 parts, resol, 27 parts, graphite, basalt fibre 23 parts, bauxitic clay 23 parts, vermiculite 3 parts, 0.7 part, zinc oxide, stearic acid 0.2 part, 0.6 part, sulphur, promotor 0.4 part.
4. composition according to any one of claim 1 to 3, is characterized in that, the median size < of described graphite, vermiculite and bauxitic clay 50 μm;
Preferably, described basaltic staple length is 2-3 millimeter, and length-to-diameter ratio is 15-20:1.
5. composition according to any one of claim 1 to 4, is characterized in that, in described paracril, acrylonitrile content is 33 ± 2%;
Preferably, described resol is the resol of model 2123.
6. composition according to any one of claim 1 to 5, is characterized in that, described promotor is accelerant CZ.
7. composition according to any one of claim 1 to 6 is preparing the application in railcar composite brake shoe.
8. a preparation method for composite brake shoe, described preparation method, comprises the steps: for raw material with the composition according to any one of claim 1 to 6
I. each raw material is prepared according to proportioning;
II. first the butadiene-acrylonitrile rubber of described weight part and cis-1,4-polybutadiene rubber are placed in milling machine, normal temperature is plasticated 2 ± 0.5 minutes;
III. resol, graphite, basalt fibre, bauxitic clay, vermiculite, zinc oxide, the stearic acid of described weight part is added again, mixing 8 ± 1 minutes of normal temperature;
IV. finally add sulphur and the promotor of described weight part, mixing 2 ± 0.5 minutes of normal temperature, discharging is stand-by;
V. the product that step IV obtains is put into the mould being preheated to 145 ± 3 DEG C, keep this temperature to carry out one step cure, 40 ± 2 minutes time;
VI. the product obtained by step V carries out post cure in warm air curing oven, and condition is 160 ± 3 DEG C, 120 ± 5 minutes, naturally cools to 50 DEG C with bottom discharge, obtains described composite brake shoe.
9. a composite brake shoe, is prepared by preparation method according to claim 8.
10. composite brake shoe according to claim 9 is used for the purposes of railcar breaking system.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949179A (en) * | 2017-04-27 | 2017-07-14 | 黄石金朝阳粉末材料有限责任公司 | A kind of method that use basalt fibre prepares automobile brake sheet |
| CN107057138A (en) * | 2017-04-21 | 2017-08-18 | 南宁市钱隆汽车租赁有限公司 | Automobile door sealing rubber |
| CN107304281A (en) * | 2016-04-18 | 2017-10-31 | 青岛志卓通力新材料有限公司 | Composite brake shoe for metro vehicle and preparation method thereof |
| CN108084961A (en) * | 2017-12-07 | 2018-05-29 | 浙江宝晟铁路新材料科技有限公司 | A kind of friction control agent containing second bonding agents and preparation method thereof |
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| CN102643511A (en) * | 2012-04-19 | 2012-08-22 | 中国铁道科学研究院金属及化学研究所 | Synthetic brake shoe and preparation method thereof |
| CN104151638A (en) * | 2014-07-29 | 2014-11-19 | 辽宁红德电碳制品有限公司 | Cold-molding composite brake shoe for high-power locomotive, and preparation method of composite brake shoe |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102643511A (en) * | 2012-04-19 | 2012-08-22 | 中国铁道科学研究院金属及化学研究所 | Synthetic brake shoe and preparation method thereof |
| CN104151638A (en) * | 2014-07-29 | 2014-11-19 | 辽宁红德电碳制品有限公司 | Cold-molding composite brake shoe for high-power locomotive, and preparation method of composite brake shoe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107304281A (en) * | 2016-04-18 | 2017-10-31 | 青岛志卓通力新材料有限公司 | Composite brake shoe for metro vehicle and preparation method thereof |
| CN107304281B (en) * | 2016-04-18 | 2019-06-11 | 青岛志卓通力新材料有限公司 | Composite brake shoe for metro vehicle and preparation method thereof |
| CN107057138A (en) * | 2017-04-21 | 2017-08-18 | 南宁市钱隆汽车租赁有限公司 | Automobile door sealing rubber |
| CN106949179A (en) * | 2017-04-27 | 2017-07-14 | 黄石金朝阳粉末材料有限责任公司 | A kind of method that use basalt fibre prepares automobile brake sheet |
| CN108084961A (en) * | 2017-12-07 | 2018-05-29 | 浙江宝晟铁路新材料科技有限公司 | A kind of friction control agent containing second bonding agents and preparation method thereof |
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| CN104725681B (en) | 2017-05-03 |
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